[ADF-740] Add button for process attachment list (#1955)

* [ADF-740] adding button to allow user to upload related content on process instance

* [ADF-740] add button for attachment content list for process

* changed locatin for translation

* [ADF-740] added test for add button for process attach

* [ADF-740] added PR request changes

ng2-components/ng2-activiti-processlist/src/components/adf-create-process-attachment.component.ts

@@ -0,0 +1,67 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Component, OnChanges, Input, SimpleChanges, Output, EventEmitter } from '@angular/core';
+import { AlfrescoTranslationService } from 'ng2-alfresco-core';
+import { ActivitiContentService } from 'ng2-activiti-form';
+
+@Component({
+    selector: 'adf-create-process-attachment',
+    styleUrls: ['./adf-create-process-attachment.component.css'],
+    templateUrl: './adf-create-process-attachment.component.html'
+})
+export class ActivitiCreateProcessAttachmentComponent implements OnChanges {
+
+    @Input()
+    processInstanceId: string;
+
+    @Output()
+    creationError: EventEmitter<any> = new EventEmitter<any>();
+
+    @Output()
+    contentCreated: EventEmitter<any> = new EventEmitter<any>();
+
+    constructor(private translateService: AlfrescoTranslationService,
+                private activitiContentService: ActivitiContentService) {
+
+        if (translateService) {
+            translateService.addTranslationFolder('ng2-activiti-processlist', 'assets/ng2-activiti-processlist/src');
+        }
+    }
+
+    ngOnChanges(changes: SimpleChanges) {
+        if (changes['processInstanceId'] && changes['processInstanceId'].currentValue) {
+            this.processInstanceId = changes['processInstanceId'].currentValue;
+        }
+    }
+
+    onFileUpload(event: any) {
+        let files: File[] = event.detail.files;
+
+        for (let i = 0; i < files.length; i++) {
+            let file: File = files[i];
+            this.activitiContentService.createProcessRelatedContent(this.processInstanceId, file).subscribe(
+                (res) => {
+                    this.contentCreated.emit(res);
+                },
+                (err) => {
+                    this.creationError.emit(err);
+                }
+            );
+        }
+    }
+}